"He wouldn't give me many details on why he was in the Potteries, but did say he's in town making a documentary and had been out campaigning with candidates.

"He was doing pieces to camera and interviewing people like Jack Dromey. He chatted to some members of the press... He was relaxed."

His team did not let much detail out about the documentary. His cameraman however, had been filming with UKIP leader Paul Nuttall a few weeks ago when it emerged he falsely claimed he lost close friends in the Hillsborough tragedy.

After spending several hours at the count, the rapper, who has previously made documentaries with the BBC looking at homelessness and the murky world of illegal dogs, departed after the result came in at about 02:30 GMT.